Mustang GT V8-4.6L SOHC VIN X (1998)
Blower Motor Resistor: Description and Operation
Blower Motor Switch Resistor
The heater blower motor switch resistor assembly operates in the following manner:
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The assembly is located on the passenger side of the A/C evaporator housing behind the glove compartment.
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Three resistance elements are mounted on the resistor board to provide four A/C blower motor speeds.
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Depending on the heater blower motor switch position, series resistance is added or bypassed in the blower motor circuit to decrease or increase
blower motor speed.
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An overheating protective device (thermal limiter) has been added to prevent heat damage to the A/C evaporator housing.
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Overheating of the resistor coils can occur when the system airflow is stopped or reduced. This occurs when the A/C blower wheel becomes
locked or unable to turn freely.
